On 20 March 2015, a total solar eclipse occurred over Ny-Ålesund (78.9°N, 11.9°E), Svalbard, in the
high Arctic. It was the first time that the surface radiation components during the totality of a solar eclipse were measured by a Baseline Surface Radiation Network (BSRN) station. With the Ny-Ålesund long-term radiation
data set as background (available at doi:10.1594/PANGAEA.150000), we present here the peculiarities of the
radiation components and basic meteorology observed during the eclipse event. The supplementary data set
contains the basic BSRN radiation and surface meteorological data in 1 min resolution for March 2015, and is
available at doi:10.1594/PANGAEA.854326. The eclipse radiation data will be a useful auxiliary data set for
further studies on micrometeorological surface–atmosphere exchange processes in the Svalbard environment,
and may serve as a test case for radiative transfer studies